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Temspec VHW 36, Operation & Maintenance Manual, Page: 8 / 14

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Temspec VHW 36 Operation & Maintenance Manual Download Page 8

 

                                   

                

The following is typical geothermal / water source heat pump refrigeration schematic. 

 

 
 

 

 
 
 

ITEM NO.  QTY 

DESCRIPTION 

ITEM NO. 

QTY 

DESCRIPTION 

1. 

1 

Compressor - R410A 

12. 

1 

Sensor - Hi Pressure - NC 

2. 

1 

Crankcase heater 

13. 

1 

Sensor - Low Pressure Ref - NO 

3. 

3 

Tee - Copper 

14. 

1 

Controller - Anti-Ice 

4. 

1 

Valve - Reversing - 4 Way - R410A 

15. 

1 

Coil - DX 

5. 

1 

Coil for Reversing Valve 

16. 

1 

Nozzle 

6. 

1 

Heat Exchanger with Bi-Directional Receiver 

17. 

1 

Coil - DX (Optional for Reheat) 

7. 

2 

Valve - TX - R410A 

18. 

1 

Swivel Tee (Optional for Reheat) 

8. 

2 

Filter Dryer 

19. 

1 

3 Way Valve (Optional for Reheat) 

9. 

2 

Check Valve 

20. 

1 

Coil for NC Solenoid Valve (Optional for Reheat) 

10. 

1 

Sight Glass 

21. 

1 

Tee - Copper (Optional for Reheat) 

11. 

5 

Valve - Access 

22. 

1 

Check Valve (Optional for Reheat) 

 
 
 
 

-6- 

Refrigeration Circuit 

Summary of Contents for VHW 36

Page 1: ...n Maintenance Manual VHW Geothermal Water Source Heat Pump Form SC OM MANUAL 2005 Temspec Incorporated IMPORTANT Read and save this manual for future reference This manual is to be left with the equipment owner ...

Page 2: ...cuit 5 Refrigeration Circuit 6 Electrical Circuit 7 Dampers 7 Optional 100 Economizer 7 Optional Powered Exhaust 7 Filtration 7 MAINTENANCE Servicing the Unit 8 Maintenance Schedule 8 Changing the Filters 9 Waterside Component Maintenance 9 Cleaning the Evaporator Coil 10 Motors 10 Cleaning the Energy Recovery Wheel 10 TROUBLESHOOTING Basic Troubleshooting Guidelines 11 REPLACEMENT PARTS Limited W...

Page 3: ...P into the classroom superior control can be obtained for each room Because of the unit s ducting capabilities an even distribution of air can be achieved throughout the room The WSHP GHP is constructed with heavy guage metal and sound absorbing insulation for optimal sound attenuation By applying sound engineering principles and through continuous testing the highest quality of performance is obt...

Page 4: ...ndoor Coil 10 Energy Recovery Exhaust Air Filter 17 Heavy Duty Return Air Grille 4 Drain Pan 11 Energy Recovery Enthalpy Wheel 18 Hinged Coil Filter Access Panel 5 Electrical Controls Enclosure 12 Energy Recovery Exhaust Fan 19 Removable Return Air Access Panel 6 Mixed Air Filters 13 Powered Exhaust Damper with Actuator 7 Economizer Damper and Actuator 14 Energy Recovery Intake Air Filter NOTE The...

Page 5: ... mode the ability of the unit ventilator to provide sufficient cooling is limited only by the outdoor air temperature and the total C F M rating of the unit 4 Mechanical Cooling The unit ventilator utilizes the self contained refrigeration section incorporated within the unit DX coil condenser coil compressor and refrigerant expansion device The system maintains the cooling set point by cycling on...

Page 6: ...TION 1 1 Hot Water Coil 5 1 Actuator Modulating 2 1 Manual Air Vent 6 1 Balance Valve Ball Valve Union 3 1 Drain Cock 7 1 Strainer Ball Valve Union 4 1 Control Valve 2 way Hot Water with 3 Way Control Valve ITEM NO QTY DESCRIPTION ITEM NO QTY DESCRIPTION 1 1 Hot Water Coil 4 1 Strainer Ball Valve Union 2 1 Manual Air Vent 5 1 Valve 3 Way Modulating 3 1 Balance Valve Ball Valve Union 6 1 Drain Cock...

Page 7: ...al water source heat pump waterside schematic ITEM NO QTY DESCRIPTION 1 1 Heat Exchanger with Bi Directional Receiver 2 1 Valve 2 Way ON OFF 3 1 Valve Balance 4 1 Strainer Ball Valve Union 5 1 Circulator Pump Optional 5 Waterside Circuit ...

Page 8: ... 1 Valve Reversing 4 Way R410A 15 1 Coil DX 5 1 Coil for Reversing Valve 16 1 Nozzle 6 1 Heat Exchanger with Bi Directional Receiver 17 1 Coil DX Optional for Reheat 7 2 Valve TX R410A 18 1 Swivel Tee Optional for Reheat 8 2 Filter Dryer 19 1 3 Way Valve Optional for Reheat 9 2 Check Valve 20 1 Coil for NC Solenoid Valve Optional for Reheat 10 1 Sight Glass 21 1 Tee Copper Optional for Reheat 11 5...

Page 9: ... source heat pumps This module includes a modulating spring return damper actuator and aluminum damper assembly and associated controls Internal powered exhaust is an optional feature that may be provided with the VHW series This feature comes with a spring return actuated aluminum damper direct drive fan and ECM motor It shall operate in tandem with the outdoor air damper to be able to provide up...

Page 10: ...o access the compressor and ERV sections you must remove a secondary panels located directly behind the return air access panel Interior and exterior environmental conditions will influence the required frequency of coil cleaning and filter change operations The following is a typical maintenance schedule for a classroom unit ventilator Initial Start Up Change out construction filters Verify that ...

Page 11: ...s panel by loosening the Philips head screws unclip the ERV exhaust filter located on the on the ERV access panel and replace filter noting the airflow direction on the filter Replace all access panels and ensure fasteners are securely fastened The following are the recommended steps for performing maintenance on the Hydronic portion of the unit CAUTION Disconnect power at the remote circuit break...

Page 12: ...ERV access panel by loosening the required fasteners Once this is completed follow the recommended steps of the wheel manufacturer AirXchange listed below Remove wheel from Heat Pump Remove the wheel from the cassette Remove loose accumulated dirt by brushing the wheel face Wash the wheel with a non acid based evaporator coil cleanser or alkaline detergent solution The wheel manufacturer suggest c...

Page 13: ... and ensure that they have not been tripped Check the fan relay to observe if it is energizing and de energizing properly Check that the 24V transformer is working properly Ensure that the wire connections are secured properly Compressor cycling on and off To the condenser air path Obstructions will cause the unit to cut out on high head pressure Check refrigerant charge If the charge is to low th...

Page 14: ...arranty period they will be supplied at no charge freight prepaid to the jobsite The cost of labor or incidental expenses incurred in the repair or replacement of parts does not form part of this warranty The warranty period commences from the date of shipment except when otherwise agreed at the point of sale see specific warranty terms and conditions for details Contact the factory at 1 888 TEMSP...

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